How to remove \n and \r from a string

A simple solution is to strip trailing whitespace:

with open('gash.txt', 'r') as var:
    for line in var:
        line = line.rstrip()
        print(line)

The advantage of rstrip() over using a [:-2] slice is that this is safe for UNIX style files as well.

However, if you only want to get rid of \r and they might not be at the end-of-line, then str.replace() is your friend:

line = line.replace('\r', '')

If you have a byte object (that's the leading b') the you can convert it to a native Python 3 string using:

line = line.decode()

to remove carriage return:

to remove tab

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